Question

help me out pls someone​

Answer 1

Step-by-step explanation:

10.

$\sin( \alpha = \frac{1}{?2 } ) \: \cos( \beta = \frac{1}{?2 \: } ) \: \: \\ \\ \alpha = 30 \\ \beta = 60 \\ \alpha + \beta = 30 + 60 = 90$